Help.

Maecola
Had a period from the 1st. Of Sept. Til the 5th. Today is the 21st. And i been having sort boobies , nauseated , light headed , lower abdomen pain , very tired . boobs been sort for about a week. Took a test on Friday 18th. It was negative , been off depo since May of 2014 , please help comment plz.